To me this goes in direct violation to the deal where Harry said "And you give me your word that you will never command me to lift my hand against those I love"
It sure sounds like it. But I think it's probably a matter of the wording "Should I fall, I have one last command" meaning that Mab is not actually in fact
giving that command. It only becomes operative if she dies, at which point her breaking her oath or not is meaningless.
It's a stretch, but I think that's how Faerie work.
Are we agreed that during the BAT stars will fall and Mab will break her word? or will Mab breaking her word lead to the stars falling.
More or less, but 'keeps not her word' doesn't necessarily mean 'actively breaks her word', it could also mean she is prevented from doing something she promised to do (such as by being killed).
Or she dies and this command to Harry then becomes operative... "Should I fall" doesn't actually limit it to
this battle.
Yeah I expect Mab's death to start the BAT... not that my track record for predictions is any good (I expected Eb to die in BG and Murphy not to).
"Stars will fall" might not be literal, could have something to do with the 'Stars and Stones' bit... or could refer to Eb using some kind of Tunguska attack...